10. 66th Anniversary of Roswell

The Doodle commemorates the event (or lack thereof) as an adventure game starring you as one of the little grey, black-eyed bipeds that sprang from someone’s imagination and off into popular culture, where these critters have since appeared in everything from creepy sci-fi movies like Fire in the Sky to horror author Whitley Streiber’s UFO abduction tell-all book, Communion. —Matt Peckham